we took a trip of several days and both kids somehow managed to not go to the bathroom until we got back home. 4 full days (one) and 5 days (the younger one). now sure how they were able to manage it. I guess they need to learn to get over it and do it in a unfamiliar bathroom
Even multiple bathroom breaks are much quicker, and cleaner than having to clean up pee from a car seat, having a kid naked from the waist down and complaining, and then getting back in a car that smells of urine!